.context-demo {
  width: 500px;
  margin: 0 auto;
  padding-top: 30px;
}
.context-demo .theme-context span {
  margin-right: 10px;
}
.context-demo .language-context span {
  margin-right: 10px;
}
.context-demo .theme-context .theme-context-child {
  width: 50px;
  height: 50px;
  color: #fff;
  text-align: center;
  line-height: 50px;
}
